|Budget Amount *help
¥118,820,000 (Direct Cost : ¥91,400,000、Indirect Cost : ¥27,420,000)
Fiscal Year 2013 : ¥21,710,000 (Direct Cost : ¥16,700,000、Indirect Cost : ¥5,010,000)
Fiscal Year 2012 : ¥21,840,000 (Direct Cost : ¥16,800,000、Indirect Cost : ¥5,040,000)
Fiscal Year 2011 : ¥21,710,000 (Direct Cost : ¥16,700,000、Indirect Cost : ¥5,010,000)
Fiscal Year 2010 : ¥24,310,000 (Direct Cost : ¥18,700,000、Indirect Cost : ¥5,610,000)
Fiscal Year 2009 : ¥29,250,000 (Direct Cost : ¥22,500,000、Indirect Cost : ¥6,750,000)
We used 3 sets of Free Air CO2 Enrichment (FACE) ring of ambient (about 390 ppm) and elevated CO2 (500 ppm predicted in 2040 by IPCC), respectively. We planted 3 kinds of birch, 3 kinds of larches (Larix gmelinii x kaempfrei; its parents), oak (Quercus mongolica var. crispula) and beech (Fagus crenata). We fumigated CO2 on these species for 4 years during growing season and monitored leaf area index (LAI: leaf area per ground area: m2/m2) of 3 kinds of birch (Betula ermanii, B. maximowicziana, B. platyphylla var. japonica) stands. There was photosynthetic down-regulation in all species. Increase of LAI and stem mass of 3 birch stands had been increased until canopy closure. Increase pattern of LAI was different among species, which may bring different stand structure in the future elevated CO2 world..